Become a MacRumors Supporter for $50/year with no ads, ability to filter front page stories, and private forums.
I would say no. Dev team specifically said that there is no downgrade option to get baseband back to 2.1 once official update is applied
 
i'm sure they will eventually crack the 2.2 baseband.. because all new iphones will come out from the factory with the new baseband already installed.

I was stupid enough to install 2.2 from itunes. At the time I thought I preferred not to mess with JB's (I once had a touch in the early days when we had no mail or maps and the JB was messy). But then I decided to try and was shocked by a few apps like sbsettings and bitesms..

now i'll have to wait
 
Register on MacRumors! This sidebar will go away, and you'll see fewer ads.